Overhead locking hinge for doors



J 9 w. A. REID OVERHEAD LOCKING HINGE FOR DOORS Filed Dec. 28, 1956 OVERHEAD LOCKING HINGE FOR DOORS Willie A. Reid, San Francisco, Calif. Application December 28, 1956, Serial No. 631,104

2 Claims. (Cl. 16-85) This invention relates to an overhead door check or hinge construction designed more particularly for temporarily checking and holding an overhead door or closure in its open position against accidental operation under the weight of the door or closure.

An important object of the invention is to provide a door check embodying pivotally connected plates secured to a door and door frame by means of securing plates, one of said securing plates being provided with an outwardly extended yieldable portion, and means for adjusting the angle of the outwardly extended portion to align the pivot pins of said plates, when the door is opened, thereby holding the door in its open position.

Another object of the invention is to construct the hinge plate connected with the outwardly extended yieldable portion of the securing plate, with an extension providing a heel or stop that engages said outwardly extended securing plate, limiting movement of the hinge plates when the door is opened, and at the same time providing means for exerting pressure on the adjacent outwardly extended portion of the securing plate when a pulling force is directed to the door in closing the door, thereby increasing the angle of the securing plate and forcing the pivot pins out of alignment allowing the door to close. I

Other and further objects and advantages of the invention will be hereinafter described and the novel features thereof defined in the appended claims.

Referring to the drawing:

Fig. 1 is a fragmental elevational view illustrating a vertically swinging door equipped with a locking hinge, constructed in accordance with the invention.

Fig. 2 is a sectional view taken on line 2-2 of Fig. 1.

Fig. 3 is an elevational view of the overhead locking hinge.

Fig. 4 is a sectional view taken on line 4--4 of Fig. 3.

Referring to the drawing in detail, the reference character 5 indicates an upwardly swinging overhead door which operates in the door frame 6, and which is secured to a supporting member 7 by means of hinges 8.

The hinges 8 provide the usual support for the door 5, and are secured to the outer surface of the door, as better shown by Fig. 2 of the drawing.

The locking hinge, forming the essence of the present invention, embodies an upper securing plate 9, secured to the supporting member 7, by means of the screws 10, the upper securing plate being formed with an angular portion 11 extended laterally at approximately forty five degrees, the outer edge of the angular portion 11 being formed into spaced knuckles to accommodate the pivot pin 12. As better shown by Fig. 4 of the drawing, the angular portion 11 is formed with an opening through which the adjusting screw 13 extends, the adjusting screw being threaded in a sleeve 14 secured in the supporting member 7. Thus it will be seen that due to this construction, the adjusting screw may be moved to vary the position of the angular portion 11, for purposes to be hereinafter described.

United States Patent O Patented Jan. 1a, 1960 ice The plate 9 being constructed of sheet metal material, is more or less yieldable and by moving the adjusting screw, the angle of the portion 11- may be adjusted to move the angular portion 11 towards or away from the supporting member 7. i

v The overhead locking hinge also embodies a securing plate 15 that is secured to the inner surfaceof the door near the upper edge thereof, as by means of screws 16, the edge of the plate 15 nearest the top edge of the door, being formed into loops or knuckles 17, forming a part of the hinge.

The locking hinge also embodies hinge plates 18 and 19 which are hingedly connected to the securing plates 15 and -9 respectively by a pintle 15' passing through knuckles of plate 18, interlocked with the knuckles 17 of plate 15 and pintle 12 effecting-a similar pivotal connection of plates 11 and 19. Y

The hinge plates 18 and 19 have their adjacent ends connected by the hinge 20 that includes a pin 21. The knuckles of plate 18, which are interlocked with knuckles 17, are formed integrally on one edge of one of the laminations thereof which is suitably secured to the other lamination thereof whose opposite edge is provided with integral knuckles interlocked with knuckles 20 (Figs. 2 and 3). Plate 19 is similarly formed from a pair of laminations having knuckles mounted respectively on pins 12 and 21 and secured to each other by suitable fasteners such as shown in Fig. 3.

As better shown in Fig. 4 of the drawing, the inner lamination of plate 19 has integral knuckles 20 formed on one edge thereof and mounted on pintle 21, and its opposite edge constitutes an extension 22 for abutting the inner face of plate portion 11 to limit the relative movements of hinge plates 18 and Hand thereby align the pivot pins of the various hinge plates with each other when the swinging door is moved to its open position.

By adjusting the screw 13 it is possible to vary the angle of the portion 11, should it be necessary to extend or retract the pin 12 to cause the various pivot pins to align to check the downward movement of the door under its Weight.

When it is desired to swing the door to its closed position, a pull directed to the door will cause the inner edge 22 to bear against the angular portion 11 of the upper securing plate 9 forcing the same slightly upwardly which permits the hinge plates 18 and 19 to swing outwardly against the action of the coiled spring 23 during continued closing movement of the door which is caused by its own weight.

The spring 23 is coiled around the pin 12, as shown by Fig. 3 of the drawing, and one end thereof indicated by the reference character 24 rests against the upper securing plate 9, While the opposite end thereof is curved and bears against the hinge plate 19 at a point adjacent to the hinge 20 thereof. It is obvious that as the door is swung to its closed position the spring is placed under tension which assists movement of plate 19 into alignment with plate 18 when the door is opened.

From the foregoing it will be seen that due to the construction shown and described, I have provided a combined door check and hinge which will operate to hold the door connected therewith, in an open position against closing under its weight, but will permit the door to close when added pressure is directed to lower the door.

It will also be seen that due to the adjusting screw 13 the angle of the portion 11 may be varied to properly adjust the plates with respectto each other to insure the operation in .accordance with the invention.

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1. A self checking hingeifor overhead closures, comrisit se stet ana y atte hii elate-ada te to be ecu P: ..9 ,9 am aq -entlo at n p te se from he laseo h th r e d h of nd spaced from,sa id closuire frame, meansfor, adjusting said offset end with 'respect to said closure frame, an attaching nlat -aflapte tte secured 9 a losu e hin e on said Clo s e frame,a pair of-pivotally connectedhinge plates piyqtally connected to said attaching plates, said hinge plates being movableinto direct longitudinal alignment holdingsaid closure in; an open; position against the weight of the closure, and an extension on one of said hinge plates engageable with, said ofiset end adapted t: 9E919? fiset end. of; said. a achin P at p y andthe bx-di a p said. in n tes u qaep l atio of a; lo in c Q sa d los re-f i 2. A self checking hinge for overhead closures, comprising a stationary attaching (plate adaptedito be secured to a closure. frame, one end of said attaching plate being offset from the plane of the other end thereof and spaced from said closure frame, means for adjusting said offset end with respect to said closure frame, an attaching plate adapted to be secured to a closure hinged on said closure frame, a pair of pivotally connected hinge plates pivotally connected to said attaching plates, said hinge plates being movable into direct longitudinal alignment, holding said closure in an open position against the weight of the closure, and means on one of said hinge plates engageable with said offset end adapted to force the offset end of said attaching plate upwardly and thereby disalign said hinge plates upon application of a closing force to said closure.

References Cited in the file of this patent UNITED STATES PATENTS 1,111,832 Hazelrigg et a1. Sept. 29, 1914 1,931,271 Simmons Oct. 17, 1933 2,158,257 Sheehe May 16, 1939 2,364,747 North et a1. Dec. 12, 1944 2,720,674 Horvay Oct. 18, 1955 

